.app-container {
  display: flex;
  min-height: 100vh;
}

/* 侧边栏样式 */
.sidebar {
  width: 250px;
  background-color: #2c3e50;
  color: white;
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  padding: 20px;
  border-bottom: 1px solid #34495e;
}

.menu {
  padding: 20px;
}

.menu ul {
  list-style-type: none;
  padding: 0;
}

.menu li {
  margin-bottom: 10px;
}

.menu a {
  color: white;
  text-decoration: none;
  display: block;
  padding: 10px;
  border-radius: 4px;
  transition: background-color 0.3s;
}

.menu a:hover {
  background-color: #34495e;
}

/* 主内容区域样式 */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* 顶部导航栏样式 */
.top-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
  background-color: #3498db;
  color: white;
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
}

.user-actions {
  display: flex;
  align-items: center;
}

.auth-buttons button {
  margin-left: 10px;
  padding: 8px 16px;
  background-color: #2ecc71;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

.user-info {
  display: flex;
  align-items: center;
}

.user-info span {
  margin-right: 10px;
  font-weight: bold;
  font-size: 1.1rem;
  color: #f8f9fa;
}

.user-info button {
  padding: 8px 16px;
  background-color: #e74c3c;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

/* 内容区域样式 */
.content {
  padding: 20px;
  flex: 1;
}